Copies of letters from Gen Ismay to Ministries with full backing of PM quoting recent...

Copies of letters from Gen Ismay to Ministries with full backing of PM quoting recent Cs of S decision to expand GCCS and requesting assistance in meeting manpower requirements Mar 25; EWT to C Mar 22 on limiting number of Sigint cleared officers in ME, endorsed by C; rather amusing summary by AD (S) of UK Sigint from 1939 pointing out anachronisms of civilian/military relations, passed on by EWT to DDMI (O) Mar 28; EWT from PS Milner-Barry of Hut 6 explaining recent lean period in E exploitation Mar 31, WG Welchman to AD (A) on planned extension of Hut 6 with accompanying plan; EWT to MI-8 requesting Army mobile Sigint units be established along the south coast between Kent and Cornwall Mar 23; Kenworthy at Knockholt to BP on operator training, establishment and pay; Col Tozer in ME to EWT on local Sigint successes from the various main sources, together with examples of ME monthly Y Summaries for Aug and Sept 1942 and daily reports for Mar 12/13 and 26/27; Cdr Saunders to EWT on comms problems with ME and North Africa and recommendation to establish dedicated Sigint channels Mar 29; AS plan for formation of Operational Air Watch Mar 22, letter to AM on new watch proposal and agreement from RAF Cheadle for new organisation, AS report on effectiveness of RAF use of tinsel/window against GAF night fighters Mar 29; BP proposal to drop most Spanish Sigint tasks Mar 28; DMI paper on organisation of military Y Mar 24; current increase in ATS Sigint operators Mar 31; list of Sigint positions by task at home and overseas Mar 31; new Army Sigint station to open at Bishops Waltham Mar 22; liaison with WO and AM, WO proposal to abolish CBME Mar 22; EWT correspondence with Director CBME, Col Scott in Algiers to EWT Mar 23, Major Sawdon's visit to North Africa and Med Mar 25, visited Gibraltar Mar 19, Algiers Mar 21, Constantine Mar 25 to be followed by visits to 18 Army Gp and 1 Army, signal from Col Scott to WO listing impending moves of ME Sigint authorities Mar 30, also Scott to EWT Mar 23, Governor Gibraltar expected to request removal of 351 WU Mar 23 so AM requests BP to agree policy, HAS insists 351 WU remains; liaison between EWT and Major Stevens and Capt Hastings in Washington, also C to Washington Mar 25; Admiralty instruction for limiting Ultra distribution Mar 27; Pentagon Sigint order to US Theatre Commanders Mar 26; Weekly Sigint Summary from ME Mar 27; report from GS Int (s) of GHQ Home Forces on results of audibility tests on south coast Mar 28; final version of WO Notes on Y Organisation in the Field endorsed by C-in-C to the Under-Secretary of State Mar 30; BP report BMP/1 ZIP/FR/W2 of Mar 27 GAF Units Carry Out Anti-invasion Exercises in NW France, Mar 10 and 12

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